wdcvar.h revision 1.2.2.7
1 1.2.2.7 bouyer /* $NetBSD: wdcvar.h,v 1.2.2.7 1998/08/21 16:34:47 bouyer Exp $ */ 2 1.1 cgd 3 1.2.2.7 bouyer /*- 4 1.2.2.7 bouyer * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 1.2.2.7 bouyer * All rights reserved. 6 1.1 cgd * 7 1.2.2.7 bouyer * This code is derived from software contributed to The NetBSD Foundation 8 1.2.2.7 bouyer * by Charles M. Hannum, by Onno van der Linden and by Manuel Bouyer. 9 1.1 cgd * 10 1.1 cgd * Redistribution and use in source and binary forms, with or without 11 1.1 cgd * modification, are permitted provided that the following conditions 12 1.1 cgd * are met: 13 1.1 cgd * 1. Redistributions of source code must retain the above copyright 14 1.2.2.1 bouyer * notice, this list of conditions and the following disclaimer. 15 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.2.1 bouyer * notice, this list of conditions and the following disclaimer in the 17 1.2.2.1 bouyer * documentation and/or other materials provided with the distribution. 18 1.1 cgd * 3. All advertising materials mentioning features or use of this software 19 1.2.2.7 bouyer * must display the following acknowledgement: 20 1.2.2.7 bouyer * This product includes software developed by the NetBSD 21 1.2.2.7 bouyer * Foundation, Inc. and its contributors. 22 1.2.2.7 bouyer * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.2.2.7 bouyer * contributors may be used to endorse or promote products derived 24 1.2.2.7 bouyer * from this software without specific prior written permission. 25 1.1 cgd * 26 1.2.2.7 bouyer * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.2.2.7 bouyer * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.2.2.7 bouyer * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.2.2.7 bouyer * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.2.2.7 bouyer * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.2.2.7 bouyer * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.2.2.7 bouyer * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.2.2.7 bouyer * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.2.2.7 bouyer * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.2.2.7 bouyer * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.2.2.7 bouyer * POSSIBILITY OF SUCH DAMAGE. 37 1.1 cgd */ 38 1.1 cgd 39 1.2.2.1 bouyer #define WAITTIME (10 * hz) /* time to wait for a completion */ 40 1.2.2.1 bouyer /* this is a lot for hard drives, but not for cdroms */ 41 1.2.2.1 bouyer 42 1.2.2.1 bouyer struct channel_queue { /* per channel queue (may be shared) */ 43 1.2.2.1 bouyer TAILQ_HEAD(xferhead, wdc_xfer) sc_xfer; 44 1.2.2.1 bouyer }; 45 1.2.2.1 bouyer 46 1.2.2.1 bouyer struct channel_softc { /* Per channel data */ 47 1.2.2.1 bouyer /* Our location */ 48 1.2.2.1 bouyer int channel; 49 1.2.2.1 bouyer /* Our controller's softc */ 50 1.2.2.1 bouyer struct wdc_softc *wdc; 51 1.2.2.1 bouyer /* Our registers */ 52 1.2.2.1 bouyer bus_space_tag_t cmd_iot; 53 1.2.2.1 bouyer bus_space_handle_t cmd_ioh; 54 1.2.2.1 bouyer bus_space_tag_t ctl_iot; 55 1.2.2.1 bouyer bus_space_handle_t ctl_ioh; 56 1.1 cgd /* 57 1.1 cgd * XXX data access (normal and 32-bit) may need to be 58 1.1 cgd * done via a separate iot/ioh on some systems. Let's 59 1.1 cgd * wait and see if that's the case before implementing 60 1.1 cgd * it. 61 1.1 cgd */ 62 1.2.2.1 bouyer /* Our state */ 63 1.2.2.1 bouyer int ch_flags; 64 1.2.2.1 bouyer #define WDCF_ACTIVE 0x01 /* channel is active */ 65 1.2.2.1 bouyer #define WDCF_IRQ_WAIT 0x10 /* controller is waiting for irq */ 66 1.2.2.1 bouyer u_int8_t ch_status; /* copy of status register */ 67 1.2.2.1 bouyer u_int8_t ch_error; /* copy of error register */ 68 1.2.2.1 bouyer /* per-drive infos */ 69 1.2.2.1 bouyer struct ata_drive_datas ch_drive[2]; 70 1.1 cgd 71 1.2.2.1 bouyer /* 72 1.2.2.1 bouyer * channel queues. May be the same for all channels, if hw channels 73 1.2.2.1 bouyer * are not independants 74 1.2.2.1 bouyer */ 75 1.2.2.1 bouyer struct channel_queue *ch_queue; 76 1.1 cgd }; 77 1.1 cgd 78 1.2.2.1 bouyer struct wdc_softc { /* Per controller state */ 79 1.2.2.1 bouyer struct device sc_dev; 80 1.2.2.4 leo /* mandatory fields */ 81 1.2.2.1 bouyer int cap; 82 1.1 cgd /* Capabilities supported by the controller */ 83 1.2.2.1 bouyer #define WDC_CAPABILITY_DATA32 0x01 /* 32-bit data access */ 84 1.2.2.3 bouyer #define WDC_CAPABILITY_PIO 0x02 /* controller knows its PIO modes */ 85 1.2.2.3 bouyer #define WDC_CAPABILITY_DMA 0x04 /* DMA */ 86 1.2.2.3 bouyer #define WDC_CAPABILITY_UDMA 0x08 /* Ultra-DMA/33 */ 87 1.2.2.3 bouyer #define WDC_CAPABILITY_HWLOCK 0x10 /* Needs to lock HW */ 88 1.2.2.5 leo #define WDC_CAPABILITY_ATA_NOSTREAM 0x20 /* Don't use stream funcs on ATA */ 89 1.2.2.5 leo #define WDC_CAPABILITY_ATAPI_NOSTREAM 0x40 /* Don't use stream funcs on ATAPI */ 90 1.2.2.4 leo u_int8_t pio_mode; /* highest PIO mode supported */ 91 1.2.2.4 leo u_int8_t dma_mode; /* highest DMA mode supported */ 92 1.2.2.1 bouyer int nchannels; /* Number of channels on this controller */ 93 1.2.2.1 bouyer struct channel_softc *channels; /* channels-specific datas (array) */ 94 1.1 cgd 95 1.2.2.1 bouyer /* if WDC_CAPABILITY_DMA set in 'cap' */ 96 1.2.2.1 bouyer void *dma_arg; 97 1.2.2.1 bouyer int (*dma_init) __P((void *, int, int, void *, size_t, 98 1.2.2.1 bouyer int)); 99 1.2.2.1 bouyer void (*dma_start) __P((void *, int, int, int)); 100 1.2.2.1 bouyer int (*dma_finish) __P((void *, int, int, int)); 101 1.1 cgd 102 1.2.2.1 bouyer /* if WDC_CAPABILITY_HWLOCK set in 'cap' */ 103 1.2.2.1 bouyer int (*claim_hw) __P((void *, int)); 104 1.2.2.1 bouyer void (*free_hw) __P((void *)); 105 1.1 cgd }; 106 1.1 cgd 107 1.2.2.1 bouyer /* 108 1.2.2.1 bouyer * Description of a command to be handled by a controller. 109 1.2.2.1 bouyer * These commands are queued in a list. 110 1.2.2.1 bouyer */ 111 1.2.2.1 bouyer struct wdc_xfer { 112 1.2.2.1 bouyer volatile u_int c_flags; 113 1.2.2.1 bouyer #define C_INUSE 0x0001 /* xfer struct is in use */ 114 1.2.2.1 bouyer #define C_ATAPI 0x0002 /* xfer is ATAPI request */ 115 1.2.2.1 bouyer #define C_TIMEOU 0x0004 /* xfer processing timed out */ 116 1.2.2.1 bouyer #define C_NEEDDONE 0x0010 /* need to call upper-level done */ 117 1.2.2.6 bouyer #define C_POLL 0x0020 /* cmd is polled */ 118 1.2.2.1 bouyer 119 1.2.2.1 bouyer /* Information about our location */ 120 1.2.2.1 bouyer u_int8_t drive; 121 1.2.2.1 bouyer u_int8_t channel; 122 1.2.2.1 bouyer 123 1.2.2.1 bouyer /* Information about the current transfer */ 124 1.2.2.1 bouyer void *cmd; /* wdc, ata or scsipi command structure */ 125 1.2.2.1 bouyer void *databuf; 126 1.2.2.1 bouyer int c_bcount; /* byte count left */ 127 1.2.2.1 bouyer int c_skip; /* bytes already transferred */ 128 1.2.2.1 bouyer TAILQ_ENTRY(wdc_xfer) c_xferchain; 129 1.2.2.1 bouyer LIST_ENTRY(wdc_xfer) free_list; 130 1.2.2.1 bouyer void (*c_start) __P((struct channel_softc *, struct wdc_xfer *)); 131 1.2.2.1 bouyer int (*c_intr) __P((struct channel_softc *, struct wdc_xfer *)); 132 1.2.2.1 bouyer }; 133 1.2.2.1 bouyer 134 1.2.2.1 bouyer /* 135 1.2.2.1 bouyer * Public functions which can be called by ATA or ATAPI specific parts, 136 1.2.2.1 bouyer * or bus-specific backends. 137 1.2.2.1 bouyer */ 138 1.2.2.1 bouyer 139 1.2.2.1 bouyer int wdcprobe __P((const struct channel_softc *)); 140 1.2.2.1 bouyer void wdcattach __P((struct channel_softc *)); 141 1.2.2.1 bouyer int wdcintr __P((void *)); 142 1.2.2.1 bouyer void wdc_exec_xfer __P((struct channel_softc *, struct wdc_xfer *)); 143 1.2.2.1 bouyer struct wdc_xfer *wdc_get_xfer __P((int)); /* int = WDC_NOSLEEP/CANSLEEP */ 144 1.2.2.1 bouyer #define WDC_CANSLEEP 0x00 145 1.2.2.1 bouyer #define WDC_NOSLEEP 0x01 146 1.2.2.1 bouyer void wdc_free_xfer __P((struct channel_softc *, struct wdc_xfer *)); 147 1.2.2.1 bouyer void wdcstart __P((struct wdc_softc *, int)); 148 1.2.2.2 bouyer void wdcrestart __P((void*)); 149 1.2.2.1 bouyer int wdcreset __P((struct channel_softc *, int)); 150 1.2.2.1 bouyer #define VERBOSE 1 151 1.2.2.1 bouyer #define SILENT 0 /* wdcreset will not print errors */ 152 1.2.2.6 bouyer int wdcwait __P((struct channel_softc *, int, int, int)); 153 1.2.2.1 bouyer void wdcbit_bucket __P(( struct channel_softc *, int)); 154 1.2.2.1 bouyer void wdccommand __P((struct channel_softc *, u_int8_t, u_int8_t, u_int16_t, 155 1.2.2.1 bouyer u_int8_t, u_int8_t, u_int8_t, u_int8_t)); 156 1.2.2.1 bouyer void wdccommandshort __P((struct channel_softc *, int, int)); 157 1.2.2.1 bouyer void wdctimeout __P((void *arg)); 158 1.2.2.1 bouyer 159 1.2.2.1 bouyer /* 160 1.2.2.1 bouyer * ST506 spec says that if READY or SEEKCMPLT go off, then the read or write 161 1.2.2.1 bouyer * command is aborted. 162 1.2.2.1 bouyer */ 163 1.2.2.6 bouyer #define wait_for_drq(chp, timeout) wdcwait((chp), \ 164 1.2.2.6 bouyer WDCS_DRDY | WDCS_DSC | WDCS_DRQ, \ 165 1.2.2.6 bouyer WDCS_DRDY | WDCS_DSC | WDCS_DRQ, (timeout)) 166 1.2.2.6 bouyer #define wait_for_unbusy(chp, timeout) wdcwait((chp), 0, 0, (timeout)) 167 1.2.2.6 bouyer #define wait_for_ready(chp, timeout) wdcwait((chp), WDCS_DRDY | WDCS_DSC, \ 168 1.2.2.6 bouyer WDCS_DRDY | WDCS_DSC, (timeout)) 169 1.2.2.6 bouyer /* ATA/ATAPI specs says a device can take 31s to reset */ 170 1.2.2.6 bouyer #define WDC_RESET_WAIT 31000 171 1.2.2.1 bouyer 172 1.2.2.1 bouyer void wdc_atapibus_attach __P((struct channel_softc *)); 173 1.2.2.1 bouyer void wdc_ata_attach __P((struct channel_softc *)); 174
Indexes created Wed Oct 22 06:10:02 GMT 2025